/Engine/Plugins/FX/Niagara/Source/Niagara/Public/NiagaraPreviewGrid.h
Base actor for preview actors used inUNiagaraPreviewAxis.
[UCLASS](Programming/UnrealArchitecture/Reference/Classes#classdeclaration)(Abstract, Blueprintable, Transient) class ANiagaraPreviewBase : public [AActor](API\Runtime\Engine\GameFramework\AActor)